includes/specials/SpecialMovepage.php

   1 <?php
   2 /**
   3  * Implements Special:Movepage
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 use MediaWiki\MediaWikiServices;
  25
  26 /**
  27  * A special page that allows users to change page titles
  28  *
  29  * @ingroup SpecialPage
  30  */
  31 class MovePageForm extends UnlistedSpecialPage {
  32         /** @var Title */
  33         protected $oldTitle = null;
  34
  35         /** @var Title */
  36         protected $newTitle;
  37
  38         /** @var string Text input */
  39         protected $reason;
  40
  41         // Checks
  42
  43         /** @var bool */
  44         protected $moveTalk;
  45
  46         /** @var bool */
  47         protected $deleteAndMove;
  48
  49         /** @var bool */
  50         protected $moveSubpages;
  51
  52         /** @var bool */
  53         protected $fixRedirects;
  54
  55         /** @var bool */
  56         protected $leaveRedirect;
  57
  58         /** @var bool */
  59         protected $moveOverShared;
  60
  61         private $watch = false;
  62
  63         public function __construct() {
  64                 parent::__construct( 'Movepage' );
  65         }
  66
  67         public function doesWrites() {
  68                 return true;
  69         }
  70
  71         public function execute( $par ) {
  72                 $this->useTransactionalTimeLimit();
  73
  74                 $this->checkReadOnly();
  75
  76                 $this->setHeaders();
  77                 $this->outputHeader();
  78
  79                 $request = $this->getRequest();
  80                 $target = $par ?? $request->getVal( 'target' );
  81
  82                 // Yes, the use of getVal() and getText() is wanted, see T22365
  83
  84                 $oldTitleText = $request->getVal( 'wpOldTitle', $target );
  85                 $this->oldTitle = Title::newFromText( $oldTitleText );
  86
  87                 if ( !$this->oldTitle ) {
  88                         // Either oldTitle wasn't passed, or newFromText returned null
  89                         throw new ErrorPageError( 'notargettitle', 'notargettext' );
  90                 }
  91                 if ( !$this->oldTitle->exists() ) {
  92                         throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
  93                 }
  94
  95                 $newTitleTextMain = $request->getText( 'wpNewTitleMain' );
  96                 $newTitleTextNs = $request->getInt( 'wpNewTitleNs', $this->oldTitle->getNamespace() );
  97                 // Backwards compatibility for forms submitting here from other sources
  98                 // which is more common than it should be..
  99                 $newTitleText_bc = $request->getText( 'wpNewTitle' );
 100                 $this->newTitle = strlen( $newTitleText_bc ) > 0
 101                         ? Title::newFromText( $newTitleText_bc )
 102                         : Title::makeTitleSafe( $newTitleTextNs, $newTitleTextMain );
 103
 104                 $user = $this->getUser();
 105
 106                 # Check rights
 107                 $permErrors = $this->oldTitle->getUserPermissionsErrors( 'move', $user );
 108                 if ( count( $permErrors ) ) {
 109                         // Auto-block user's IP if the account was "hard" blocked
 110                         DeferredUpdates::addCallableUpdate( function () use ( $user ) {
 111                                 $user->spreadAnyEditBlock();
 112                         } );
 113                         throw new PermissionsError( 'move', $permErrors );
 114                 }
 115
 116                 $def = !$request->wasPosted();
 117
 118                 $this->reason = $request->getText( 'wpReason' );
 119                 $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
 120                 $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
 121                 $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
 122                 $this->moveSubpages = $request->getBool( 'wpMovesubpages' );
 123                 $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' );
 124                 $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile' );
 125                 $this->watch = $request->getCheck( 'wpWatch' ) && $user->isLoggedIn();
 126
 127                 if ( $request->getVal( 'action' ) == 'submit' && $request->wasPosted()
 128                         && $user->matchEditToken( $request->getVal( 'wpEditToken' ) )
 129                 ) {
 130                         $this->doSubmit();
 131                 } else {
 132                         $this->showForm( [] );
 133                 }
 134         }
 135
 136         /**
 137          * Show the form
 138          *
 139          * @param array $err Error messages. Each item is an error message.
 140          *    It may either be a string message name or array message name and
 141          *    parameters, like the second argument to OutputPage::wrapWikiMsg().
 142          * @param bool $isPermError Whether the error message is about user permissions.
 143          */
 144         function showForm( $err, $isPermError = false ) {
 145                 $this->getSkin()->setRelevantTitle( $this->oldTitle );
 146
 147                 $out = $this->getOutput();
 148                 $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
 149                 $out->addModuleStyles( 'mediawiki.special' );
 150                 $out->addModules( 'mediawiki.misc-authed-ooui' );
 151                 $this->addHelpLink( 'Help:Moving a page' );
 152
 153                 $handlerSupportsRedirects = ContentHandler::getForTitle( $this->oldTitle )
 154                         ->supportsRedirects();
 155
 156                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 157                         $out->addWikiMsg( 'movepagetext' );
 158                 } else {
 159                         $out->addWikiMsg( $handlerSupportsRedirects ?
 160                                 'movepagetext-noredirectfixer' :
 161                                 'movepagetext-noredirectsupport' );
 162                 }
 163
 164                 if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 165                         $out->wrapWikiMsg(
 166                                 "<div class=\"warningbox mw-moveuserpage-warning\">\n$1\n</div>",
 167                                 'moveuserpage-warning'
 168                         );
 169                 } elseif ( $this->oldTitle->getNamespace() == NS_CATEGORY ) {
 170                         $out->wrapWikiMsg(
 171                                 "<div class=\"warningbox mw-movecategorypage-warning\">\n$1\n</div>",
 172                                 'movecategorypage-warning'
 173                         );
 174                 }
 175
 176                 $deleteAndMove = false;
 177                 $moveOverShared = false;
 178
 179                 $user = $this->getUser();
 180
 181                 $newTitle = $this->newTitle;
 182
 183                 if ( !$newTitle ) {
 184                         # Show the current title as a default
 185                         # when the form is first opened.
 186                         $newTitle = $this->oldTitle;
 187                 } elseif ( !count( $err ) ) {
 188                         # If a title was supplied, probably from the move log revert
 189                         # link, check for validity. We can then show some diagnostic
 190                         # information and save a click.
 191                         $mp = new MovePage( $this->oldTitle, $newTitle );
 192                         $status = $mp->isValidMove();
 193                         $status->merge( $mp->checkPermissions( $user, null ) );
 194                         if ( $status->getErrors() ) {
 195                                 $err = $status->getErrorsArray();
 196                         }
 197                 }
 198
 199                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 200                         && MediaWikiServices::getInstance()->getPermissionManager()
 201                                  ->quickUserCan( 'delete', $user, $newTitle )
 202                 ) {
 203                         $out->wrapWikiMsg(
 204                                 "<div class='warningbox'>\n$1\n</div>\n",
 205                                 [ 'delete_and_move_text', $newTitle->getPrefixedText() ]
 206                         );
 207                         $deleteAndMove = true;
 208                         $err = [];
 209                 }
 210
 211                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
 212                         && $user->isAllowed( 'reupload-shared' )
 213                 ) {
 214                         $out->wrapWikiMsg(
 215                                 "<div class='warningbox'>\n$1\n</div>\n",
 216                                 [
 217                                         'move-over-sharedrepo',
 218                                         $newTitle->getPrefixedText()
 219                                 ]
 220                         );
 221                         $moveOverShared = true;
 222                         $err = [];
 223                 }
 224
 225                 $oldTalk = $this->oldTitle->getTalkPage();
 226                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 227                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 228
 229                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 230                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 231
 232                 # We also want to be able to move assoc. subpage talk-pages even if base page
 233                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 234                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 235                         ( $oldTalk->exists()
 236                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 237
 238                 $dbr = wfGetDB( DB_REPLICA );
 239                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 240                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 241                                 [
 242                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 243                                         'rd_title' => $this->oldTitle->getDBkey(),
 244                                 ], __METHOD__ );
 245                 } else {
 246                         $hasRedirects = false;
 247                 }
 248
 249                 if ( count( $err ) ) {
 250                         if ( $isPermError ) {
 251                                 $action_desc = $this->msg( 'action-move' )->plain();
 252                                 $errMsgHtml = $this->msg( 'permissionserrorstext-withaction',
 253                                         count( $err ), $action_desc )->parseAsBlock();
 254                         } else {
 255                                 $errMsgHtml = $this->msg( 'cannotmove', count( $err ) )->parseAsBlock();
 256                         }
 257
 258                         if ( count( $err ) == 1 ) {
 259                                 $errMsg = $err[0];
 260                                 $errMsgName = array_shift( $errMsg );
 261
 262                                 if ( $errMsgName == 'hookaborted' ) {
 263                                         $errMsgHtml .= "<p>{$errMsg[0]}</p>\n";
 264                                 } else {
 265                                         $errMsgHtml .= $this->msg( $errMsgName, $errMsg )->parseAsBlock();
 266                                 }
 267                         } else {
 268                                 $errStr = [];
 269
 270                                 foreach ( $err as $errMsg ) {
 271                                         if ( $errMsg[0] == 'hookaborted' ) {
 272                                                 $errStr[] = $errMsg[1];
 273                                         } else {
 274                                                 $errMsgName = array_shift( $errMsg );
 275                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 276                                         }
 277                                 }
 278
 279                                 $errMsgHtml .= '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n";
 280                         }
 281                         $out->addHTML( Html::errorBox( $errMsgHtml ) );
 282                 }
 283
 284                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 285                         # Is the title semi-protected?
 286                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 287                                 $noticeMsg = 'semiprotectedpagemovewarning';
 288                         } else {
 289                                 # Then it must be protected based on static groups (regular)
 290                                 $noticeMsg = 'protectedpagemovewarning';
 291                         }
 292                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 293                         $out->addWikiMsg( $noticeMsg );
 294                         LogEventsList::showLogExtract(
 295                                 $out,
 296                                 'protect',
 297                                 $this->oldTitle,
 298                                 '',
 299                                 [ 'lim' => 1 ]
 300                         );
 301                         $out->addHTML( "</div>\n" );
 302                 }
 303
 304                 // Length limit for wpReason and wpNewTitleMain is enforced in the
 305                 // mediawiki.special.movePage module
 306
 307                 $immovableNamespaces = [];
 308                 foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
 309                         if ( !MediaWikiServices::getInstance()->getNamespaceInfo()->isMovable( $nsId ) ) {
 310                                 $immovableNamespaces[] = $nsId;
 311                         }
 312                 }
 313
 314                 $out->enableOOUI();
 315                 $fields = [];
 316
 317                 $fields[] = new OOUI\FieldLayout(
 318                         new MediaWiki\Widget\ComplexTitleInputWidget( [
 319                                 'id' => 'wpNewTitle',
 320                                 'namespace' => [
 321                                         'id' => 'wpNewTitleNs',
 322                                         'name' => 'wpNewTitleNs',
 323                                         'value' => $newTitle->getNamespace(),
 324                                         'exclude' => $immovableNamespaces,
 325                                 ],
 326                                 'title' => [
 327                                         'id' => 'wpNewTitleMain',
 328                                         'name' => 'wpNewTitleMain',
 329                                         'value' => $newTitle->getText(),
 330                                         // Inappropriate, since we're expecting the user to input a non-existent page's title
 331                                         'suggestions' => false,
 332                                 ],
 333                                 'infusable' => true,
 334                         ] ),
 335                         [
 336                                 'label' => $this->msg( 'newtitle' )->text(),
 337                                 'align' => 'top',
 338                         ]
 339                 );
 340
 341                 // HTML maxlength uses "UTF-16 code units", which means that characters outside BMP
 342                 // (e.g. emojis) count for two each. This limit is overridden in JS to instead count
 343                 // Unicode codepoints.
 344                 $fields[] = new OOUI\FieldLayout(
 345                         new OOUI\TextInputWidget( [
 346                                 'name' => 'wpReason',
 347                                 'id' => 'wpReason',
 348                                 'maxLength' => CommentStore::COMMENT_CHARACTER_LIMIT,
 349                                 'infusable' => true,
 350                                 'value' => $this->reason,
 351                         ] ),
 352                         [
 353                                 'label' => $this->msg( 'movereason' )->text(),
 354                                 'align' => 'top',
 355                         ]
 356                 );
 357
 358                 if ( $considerTalk ) {
 359                         $fields[] = new OOUI\FieldLayout(
 360                                 new OOUI\CheckboxInputWidget( [
 361                                         'name' => 'wpMovetalk',
 362                                         'id' => 'wpMovetalk',
 363                                         'value' => '1',
 364                                         'selected' => $this->moveTalk,
 365                                 ] ),
 366                                 [
 367                                         'label' => $this->msg( 'movetalk' )->text(),
 368                                         'help' => new OOUI\HtmlSnippet( $this->msg( 'movepagetalktext' )->parseAsBlock() ),
 369                                         'helpInline' => true,
 370                                         'align' => 'inline',
 371                                         'id' => 'wpMovetalk-field',
 372                                 ]
 373                         );
 374                 }
 375
 376                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 377                         if ( $handlerSupportsRedirects ) {
 378                                 $isChecked = $this->leaveRedirect;
 379                                 $isDisabled = false;
 380                         } else {
 381                                 $isChecked = false;
 382                                 $isDisabled = true;
 383                         }
 384                         $fields[] = new OOUI\FieldLayout(
 385                                 new OOUI\CheckboxInputWidget( [
 386                                         'name' => 'wpLeaveRedirect',
 387                                         'id' => 'wpLeaveRedirect',
 388                                         'value' => '1',
 389                                         'selected' => $isChecked,
 390                                         'disabled' => $isDisabled,
 391                                 ] ),
 392                                 [
 393                                         'label' => $this->msg( 'move-leave-redirect' )->text(),
 394                                         'align' => 'inline',
 395                                 ]
 396                         );
 397                 }
 398
 399                 if ( $hasRedirects ) {
 400                         $fields[] = new OOUI\FieldLayout(
 401                                 new OOUI\CheckboxInputWidget( [
 402                                         'name' => 'wpFixRedirects',
 403                                         'id' => 'wpFixRedirects',
 404                                         'value' => '1',
 405                                         'selected' => $this->fixRedirects,
 406                                 ] ),
 407                                 [
 408                                         'label' => $this->msg( 'fix-double-redirects' )->text(),
 409                                         'align' => 'inline',
 410                                 ]
 411                         );
 412                 }
 413
 414                 if ( $canMoveSubpage ) {
 415                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 416                         $fields[] = new OOUI\FieldLayout(
 417                                 new OOUI\CheckboxInputWidget( [
 418                                         'name' => 'wpMovesubpages',
 419                                         'id' => 'wpMovesubpages',
 420                                         'value' => '1',
 421                                         'selected' => true, // T222953 Always check the box
 422                                 ] ),
 423                                 [
 424                                         'label' => new OOUI\HtmlSnippet(
 425                                                 $this->msg(
 426                                                         ( $this->oldTitle->hasSubpages()
 427                                                                 ? 'move-subpages'
 428                                                                 : 'move-talk-subpages' )
 429                                                 )->numParams( $maximumMovedPages )->params( $maximumMovedPages )->parse()
 430                                         ),
 431                                         'align' => 'inline',
 432                                 ]
 433                         );
 434                 }
 435
 436                 # Don't allow watching if user is not logged in
 437                 if ( $user->isLoggedIn() ) {
 438                         $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 439                                 || $user->isWatched( $this->oldTitle ) );
 440                         $fields[] = new OOUI\FieldLayout(
 441                                 new OOUI\CheckboxInputWidget( [
 442                                         'name' => 'wpWatch',
 443                                         'id' => 'watch', # ew
 444                                         'value' => '1',
 445                                         'selected' => $watchChecked,
 446                                 ] ),
 447                                 [
 448                                         'label' => $this->msg( 'move-watch' )->text(),
 449                                         'align' => 'inline',
 450                                 ]
 451                         );
 452                 }
 453
 454                 $hiddenFields = '';
 455                 if ( $moveOverShared ) {
 456                         $hiddenFields .= Html::hidden( 'wpMoveOverSharedFile', '1' );
 457                 }
 458
 459                 if ( $deleteAndMove ) {
 460                         $fields[] = new OOUI\FieldLayout(
 461                                 new OOUI\CheckboxInputWidget( [
 462                                         'name' => 'wpDeleteAndMove',
 463                                         'id' => 'wpDeleteAndMove',
 464                                         'value' => '1',
 465                                 ] ),
 466                                 [
 467                                         'label' => $this->msg( 'delete_and_move_confirm' )->text(),
 468                                         'align' => 'inline',
 469                                 ]
 470                         );
 471                 }
 472
 473                 $fields[] = new OOUI\FieldLayout(
 474                         new OOUI\ButtonInputWidget( [
 475                                 'name' => 'wpMove',
 476                                 'value' => $this->msg( 'movepagebtn' )->text(),
 477                                 'label' => $this->msg( 'movepagebtn' )->text(),
 478                                 'flags' => [ 'primary', 'progressive' ],
 479                                 'type' => 'submit',
 480                         ] ),
 481                         [
 482                                 'align' => 'top',
 483                         ]
 484                 );
 485
 486                 $fieldset = new OOUI\FieldsetLayout( [
 487                         'label' => $this->msg( 'move-page-legend' )->text(),
 488                         'id' => 'mw-movepage-table',
 489                         'items' => $fields,
 490                 ] );
 491
 492                 $form = new OOUI\FormLayout( [
 493                         'method' => 'post',
 494                         'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
 495                         'id' => 'movepage',
 496                 ] );
 497                 $form->appendContent(
 498                         $fieldset,
 499                         new OOUI\HtmlSnippet(
 500                                 $hiddenFields .
 501                                 Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 502                                 Html::hidden( 'wpEditToken', $user->getEditToken() )
 503                         )
 504                 );
 505
 506                 $out->addHTML(
 507                         new OOUI\PanelLayout( [
 508                                 'classes' => [ 'movepage-wrapper' ],
 509                                 'expanded' => false,
 510                                 'padded' => true,
 511                                 'framed' => true,
 512                                 'content' => $form,
 513                         ] )
 514                 );
 515
 516                 $this->showLogFragment( $this->oldTitle );
 517                 $this->showSubpages( $this->oldTitle );
 518         }
 519
 520         function doSubmit() {
 521                 $user = $this->getUser();
 522
 523                 if ( $user->pingLimiter( 'move' ) ) {
 524                         throw new ThrottledError;
 525                 }
 526
 527                 $ot = $this->oldTitle;
 528                 $nt = $this->newTitle;
 529
 530                 # don't allow moving to pages with # in
 531                 if ( !$nt || $nt->hasFragment() ) {
 532                         $this->showForm( [ [ 'badtitletext' ] ] );
 533
 534                         return;
 535                 }
 536
 537                 # Show a warning if the target file exists on a shared repo
 538                 if ( $nt->getNamespace() == NS_FILE
 539                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 540                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 541                         && MediaWikiServices::getInstance()->getRepoGroup()->findFile( $nt )
 542                 ) {
 543                         $this->showForm( [ [ 'file-exists-sharedrepo' ] ] );
 544
 545                         return;
 546                 }
 547
 548                 # Delete to make way if requested
 549                 if ( $this->deleteAndMove ) {
 550                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 551                         if ( count( $permErrors ) ) {
 552                                 # Only show the first error
 553                                 $this->showForm( $permErrors, true );
 554
 555                                 return;
 556                         }
 557
 558                         $page = WikiPage::factory( $nt );
 559
 560                         // Small safety margin to guard against concurrent edits
 561                         if ( $page->isBatchedDelete( 5 ) ) {
 562                                 $this->showForm( [ [ 'movepage-delete-first' ] ] );
 563
 564                                 return;
 565                         }
 566
 567                         $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 568
 569                         // Delete an associated image if there is
 570                         if ( $nt->getNamespace() == NS_FILE ) {
 571                                 $file = MediaWikiServices::getInstance()->getRepoGroup()->getLocalRepo()
 572                                         ->newFile( $nt );
 573                                 $file->load( File::READ_LATEST );
 574                                 if ( $file->exists() ) {
 575                                         $file->delete( $reason, false, $user );
 576                                 }
 577                         }
 578
 579                         $error = ''; // passed by ref
 580                         $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
 581                         if ( !$deleteStatus->isGood() ) {
 582                                 $this->showForm( $deleteStatus->getErrorsArray() );
 583
 584                                 return;
 585                         }
 586                 }
 587
 588                 $handler = ContentHandler::getForTitle( $ot );
 589
 590                 if ( !$handler->supportsRedirects() ) {
 591                         $createRedirect = false;
 592                 } elseif ( $user->isAllowed( 'suppressredirect' ) ) {
 593                         $createRedirect = $this->leaveRedirect;
 594                 } else {
 595                         $createRedirect = true;
 596                 }
 597
 598                 # Do the actual move.
 599                 $mp = new MovePage( $ot, $nt );
 600
 601                 # check whether the requested actions are permitted / possible
 602                 $userPermitted = $mp->checkPermissions( $user, $this->reason )->isOK();
 603                 if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
 604                         $this->moveTalk = false;
 605                 }
 606                 if ( $this->moveSubpages ) {
 607                         $permissionManager = MediaWikiServices::getInstance()->getPermissionManager();
 608                         $this->moveSubpages = $permissionManager->userCan( 'move-subpages', $user, $ot );
 609                 }
 610
 611                 $status = $mp->moveIfAllowed( $user, $this->reason, $createRedirect );
 612                 if ( !$status->isOK() ) {
 613                         $this->showForm( $status->getErrorsArray(), !$userPermitted );
 614                         return;
 615                 }
 616
 617                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) && $this->fixRedirects ) {
 618                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 619                 }
 620
 621                 $out = $this->getOutput();
 622                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 623
 624                 $linkRenderer = $this->getLinkRenderer();
 625                 $oldLink = $linkRenderer->makeLink(
 626                         $ot,
 627                         null,
 628                         [ 'id' => 'movepage-oldlink' ],
 629                         [ 'redirect' => 'no' ]
 630                 );
 631                 $newLink = $linkRenderer->makeKnownLink(
 632                         $nt,
 633                         null,
 634                         [ 'id' => 'movepage-newlink' ]
 635                 );
 636                 $oldText = $ot->getPrefixedText();
 637                 $newText = $nt->getPrefixedText();
 638
 639                 if ( $ot->exists() ) {
 640                         // NOTE: we assume that if the old title exists, it's because it was re-created as
 641                         // a redirect to the new title. This is not safe, but what we did before was
 642                         // even worse: we just determined whether a redirect should have been created,
 643                         // and reported that it was created if it should have, without any checks.
 644                         // Also note that isRedirect() is unreliable because of T39209.
 645                         $msgName = 'movepage-moved-redirect';
 646                 } else {
 647                         $msgName = 'movepage-moved-noredirect';
 648                 }
 649
 650                 $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
 651                         $newLink )->params( $oldText, $newText )->parseAsBlock() );
 652                 $out->addWikiMsg( $msgName );
 653
 654                 // Avoid PHP 7.1 warning from passing $this by reference
 655                 $movePage = $this;
 656                 Hooks::run( 'SpecialMovepageAfterMove', [ &$movePage, &$ot, &$nt ] );
 657
 658                 /*
 659                  * Now we move extra pages we've been asked to move: subpages and talk
 660                  * pages.
 661                  *
 662                  * First, make a list of id's.  This might be marginally less efficient
 663                  * than a more direct method, but this is not a highly performance-cri-
 664                  * tical code path and readable code is more important here.
 665                  *
 666                  * If the target namespace doesn't allow subpages, moving with subpages
 667                  * would mean that you couldn't move them back in one operation, which
 668                  * is bad.
 669                  * @todo FIXME: A specific error message should be given in this case.
 670                  */
 671
 672                 // @todo FIXME: Use Title::moveSubpages() here
 673                 $nsInfo = MediaWikiServices::getInstance()->getNamespaceInfo();
 674                 $dbr = wfGetDB( DB_MASTER );
 675                 if ( $this->moveSubpages && (
 676                         $nsInfo->hasSubpages( $nt->getNamespace() ) || (
 677                                 $this->moveTalk
 678                                         && $nsInfo->hasSubpages( $nt->getTalkPage()->getNamespace() )
 679                         )
 680                 ) ) {
 681                         $conds = [
 682                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 683                                         . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 684                         ];
 685                         $conds['page_namespace'] = [];
 686                         if ( $nsInfo->hasSubpages( $nt->getNamespace() ) ) {
 687                                 $conds['page_namespace'][] = $ot->getNamespace();
 688                         }
 689                         if ( $this->moveTalk &&
 690                                 $nsInfo->hasSubpages( $nt->getTalkPage()->getNamespace() )
 691                         ) {
 692                                 $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
 693                         }
 694                 } elseif ( $this->moveTalk ) {
 695                         $conds = [
 696                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 697                                 'page_title' => $ot->getDBkey()
 698                         ];
 699                 } else {
 700                         # Skip the query
 701                         $conds = null;
 702                 }
 703
 704                 $extraPages = [];
 705                 if ( !is_null( $conds ) ) {
 706                         $extraPages = TitleArray::newFromResult(
 707                                 $dbr->select( 'page',
 708                                         [ 'page_id', 'page_namespace', 'page_title' ],
 709                                         $conds,
 710                                         __METHOD__
 711                                 )
 712                         );
 713                 }
 714
 715                 $extraOutput = [];
 716                 $count = 1;
 717                 foreach ( $extraPages as $oldSubpage ) {
 718                         if ( $ot->equals( $oldSubpage ) || $nt->equals( $oldSubpage ) ) {
 719                                 # Already did this one.
 720                                 continue;
 721                         }
 722
 723                         $newPageName = preg_replace(
 724                                 '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
 725                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # T23234
 726                                 $oldSubpage->getDBkey()
 727                         );
 728
 729                         if ( $oldSubpage->isSubpage() && ( $ot->isTalkPage() xor $nt->isTalkPage() ) ) {
 730                                 // Moving a subpage from a subject namespace to a talk namespace or vice-versa
 731                                 $newNs = $nt->getNamespace();
 732                         } elseif ( $oldSubpage->isTalkPage() ) {
 733                                 $newNs = $nt->getTalkPage()->getNamespace();
 734                         } else {
 735                                 $newNs = $nt->getSubjectPage()->getNamespace();
 736                         }
 737
 738                         # T16385: we need makeTitleSafe because the new page names may
 739                         # be longer than 255 characters.
 740                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 741                         if ( !$newSubpage ) {
 742                                 $oldLink = $linkRenderer->makeKnownLink( $oldSubpage );
 743                                 $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink )
 744                                         ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
 745                                 continue;
 746                         }
 747
 748                         $mp = new MovePage( $oldSubpage, $newSubpage );
 749                         # This was copy-pasted from Renameuser, bleh.
 750                         if ( $newSubpage->exists() && !$mp->isValidMove()->isOK() ) {
 751                                 $link = $linkRenderer->makeKnownLink( $newSubpage );
 752                                 $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
 753                         } else {
 754                                 $status = $mp->moveIfAllowed( $user, $this->reason, $createRedirect );
 755
 756                                 if ( $status->isOK() ) {
 757                                         if ( $this->fixRedirects ) {
 758                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 759                                         }
 760                                         $oldLink = $linkRenderer->makeLink(
 761                                                 $oldSubpage,
 762                                                 null,
 763                                                 [],
 764                                                 [ 'redirect' => 'no' ]
 765                                         );
 766
 767                                         $newLink = $linkRenderer->makeKnownLink( $newSubpage );
 768                                         $extraOutput[] = $this->msg( 'movepage-page-moved' )
 769                                                 ->rawParams( $oldLink, $newLink )->escaped();
 770                                         ++$count;
 771
 772                                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 773                                         if ( $count >= $maximumMovedPages ) {
 774                                                 $extraOutput[] = $this->msg( 'movepage-max-pages' )
 775                                                         ->numParams( $maximumMovedPages )->escaped();
 776                                                 break;
 777                                         }
 778                                 } else {
 779                                         $oldLink = $linkRenderer->makeKnownLink( $oldSubpage );
 780                                         $newLink = $linkRenderer->makeLink( $newSubpage );
 781                                         $extraOutput[] = $this->msg( 'movepage-page-unmoved' )
 782                                                 ->rawParams( $oldLink, $newLink )->escaped();
 783                                 }
 784                         }
 785                 }
 786
 787                 if ( $extraOutput !== [] ) {
 788                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 789                 }
 790
 791                 # Deal with watches (we don't watch subpages)
 792                 WatchAction::doWatchOrUnwatch( $this->watch, $ot, $user );
 793                 WatchAction::doWatchOrUnwatch( $this->watch, $nt, $user );
 794         }
 795
 796         function showLogFragment( $title ) {
 797                 $moveLogPage = new LogPage( 'move' );
 798                 $out = $this->getOutput();
 799                 $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
 800                 LogEventsList::showLogExtract( $out, 'move', $title );
 801         }
 802
 803         /**
 804          * Show subpages of the page being moved. Section is not shown if both current
 805          * namespace does not support subpages and no talk subpages were found.
 806          *
 807          * @param Title $title Page being moved.
 808          */
 809         function showSubpages( $title ) {
 810                 $nsHasSubpages = MediaWikiServices::getInstance()->getNamespaceInfo()->
 811                         hasSubpages( $title->getNamespace() );
 812                 $subpages = $title->getSubpages();
 813                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 814
 815                 $titleIsTalk = $title->isTalkPage();
 816                 $subpagesTalk = $title->getTalkPage()->getSubpages();
 817                 $countTalk = $subpagesTalk instanceof TitleArray ? $subpagesTalk->count() : 0;
 818                 $totalCount = $count + $countTalk;
 819
 820                 if ( !$nsHasSubpages && $countTalk == 0 ) {
 821                         return;
 822                 }
 823
 824                 $this->getOutput()->wrapWikiMsg(
 825                         '== $1 ==',
 826                         [ 'movesubpage', ( $titleIsTalk ? $count : $totalCount ) ]
 827                 );
 828
 829                 if ( $nsHasSubpages ) {
 830                         $this->showSubpagesList( $subpages, $count, 'movesubpagetext', true );
 831                 }
 832
 833                 if ( !$titleIsTalk && $countTalk > 0 ) {
 834                         $this->showSubpagesList( $subpagesTalk, $countTalk, 'movesubpagetalktext' );
 835                 }
 836         }
 837
 838         function showSubpagesList( $subpages, $pagecount, $wikiMsg, $noSubpageMsg = false ) {
 839                 $out = $this->getOutput();
 840
 841                 # No subpages.
 842                 if ( $pagecount == 0 && $noSubpageMsg ) {
 843                         $out->addWikiMsg( 'movenosubpage' );
 844                         return;
 845                 }
 846
 847                 $out->addWikiMsg( $wikiMsg, $this->getLanguage()->formatNum( $pagecount ) );
 848                 $out->addHTML( "<ul>\n" );
 849
 850                 $linkBatch = new LinkBatch( $subpages );
 851                 $linkBatch->setCaller( __METHOD__ );
 852                 $linkBatch->execute();
 853                 $linkRenderer = $this->getLinkRenderer();
 854
 855                 foreach ( $subpages as $subpage ) {
 856                         $link = $linkRenderer->makeLink( $subpage );
 857                         $out->addHTML( "<li>$link</li>\n" );
 858                 }
 859                 $out->addHTML( "</ul>\n" );
 860         }
 861
 862         /**
 863          * Return an array of subpages beginning with $search that this special page will accept.
 864          *
 865          * @param string $search Prefix to search for
 866          * @param int $limit Maximum number of results to return (usually 10)
 867          * @param int $offset Number of results to skip (usually 0)
 868          * @return string[] Matching subpages
 869          */
 870         public function prefixSearchSubpages( $search, $limit, $offset ) {
 871                 return $this->prefixSearchString( $search, $limit, $offset );
 872         }
 873
 874         protected function getGroupName() {
 875                 return 'pagetools';
 876         }
 877 }